Valve lifter



C. F. AND F. O. LENGFELD AND J. J. McHUGH.

VALVE LIFTER.

APPLICATION FILED MAR-16,1921.

Patented Oct 3, 1922.,

N M hm Patented Oct. 3, 1922.

' lTED STATES 1,430,822 PATENT lQE.

CARL FREDERICK LENGFELD, FREDERICK OTTO LENGFELD, AND JOHN JOSEPH McH'U'G-H, OF SAN FRANCISCO, CALIFORNIA.

VALVE LIFTER.

Application filed March 16, 1921.

To all whom it may concern.

Be it known that we, CARL FREDERICK Lnxornnn, FREDERICK O'rro LENGFELD, and JOHN Josnrn .MCHUGH, citizens of the United States, and residents of San Francisco, county of San Francisco, and State of California, have invented anew and useful Valve Lifter, of which the following is :1V specification.

The present invention relates to improvements in valve spring lifting devices and is intended to be used principally in connection with Ford automobiles. It will, therefore, be described in the following with particular reference to Ford automobiles, although we do not wish to confine ourselves to this type of automobiles exclusively but wish to secure protection for our invention in connection with any automobile in which similar conditions prevail and on which it may be used to advantage The principal object of our invention is to provide a valve spring lifting device by means of which four valve springs may be lifted at atime and which will interfere in no way with the operations necessary for the removal or the grinding of the valve. A further objectis to provide a valve spring lifter that does not interfere with the intake and exhaust manifolds or the carburetor and has no working parts below the valve spring seat and thus does not offer any obstacle to the fingers of the operator in extracting the pin supporting the spring seat. A further object is to provide a lifter that may remain in its place while the work desired to be done on the four valves concerned is performed and thus does away with any readjusting of the device for the replacing of the valve. A further object is the utilizing of the two waterholes which are disposed between the first and the second and between the third and the fourth of the cylinders of the Ford engine to provide a. strong and positive hold for our device so that there is no chance for the same becoming loose or dislocated while the work is being done on the valves.

)Ve attain these objects by means of the mechanism illustrated in the accompanying drawing in which Figure (1) represents a front view of the cylinder casing of av Ford engine, the c'linder head being removed. having our evice attached thereto, and Figure (2) a plan view of our device, indi- Serial No. 452,813.

eating the location of the different the cylinder casing in dotted lines.

Referring to the drawing more particularly, it will be seen that in the engine (1) of a Ford automobile the cam shaft (2) actuates the push rods (3) and through" them the valves (4) consisting of the valve stems (6) and the valve heads (7). Between the upper part of the engine casing and a washer (8), hereinafter referred to as the spring seat. a spring (9) is interposed. The spring seat (8) is held in place by a pin (11) penetrating the valve stem below said spring seat. In operation a cam (12) on the cam shaft pushes the valve upward, while the spring forces it downward again as soon as the cam permits of a downward motion.- In order to remove the valve or to gain free access to the same it is necessary to remove the pin supporting the spring seat. whereupon tie valve may be withdrawn upwardly.

Our lifting device (16)'is designed to facilitate the removal of the pin and to enable the operator to handle four valves simultaneously. As may be seen from the drawing, our device consists of a clamp (17) comprising a substantially U shaped rigid yoke (18), consisting of a substantially vertical member (19), an upper horizontal arm 21) and a lower horizontal arm (22). The upper arm carries at its end a lug (23) having a vertical, threaded hole (24) into which fits the screw 26 having a wing (27) at its upper end. The lower arm (22) carries a horizontal metal plate (28). co-extensive in length with about one-half of the engine casing. At its working edge (29), as shown in Fig ure (2), it is provided with four slots ending into circular recesses (32) which are spaced with reference to each other so as to correspond to the distances between four adjoining valve stems in the Ford car. While in a Ford car the valve stems are not all evenly spaced. there being a larger space between the fourth and the fifth than between the others, the spacing is even in two groups of four each, and our device will be adapted to fit on either group of four.

The vertical ciently far from the ends of the horizontal arms so as to clear the intake and exhaust manifolds (33) and (34:).

It will be seen that when in place as shown in Figure (1), the screw (26) is not vertiparts of member (19) is spaced sufii-.

cally aligned with the valve stems but i1 arranged parallel to the same in a plane somewhat nearer the center line of the engine casing. The object of this arrangement is, that in this manner we can utilize two holes (36) that are provided in the top of the engine casing of a Ford automobile in connection with the water cooling system. One of these holes is disposed between the first and second cylinders, almost midwa s between the center line of the cylin ers and the center line of'the valve stems, and the second hole on the same longitudinal line be ween the third and the fourth cylinders. By making the upper arm a little longer than the lower arm we can utilize these holes as a support for the screw without affecting the horizontal position of the plate.

In actual use our device works as follows: After removal of the cylinder head insert the tip of the screw (26) into the water hole (36) between the first andsecond cylinders, then sli the plate four va ve stems of the-two first cylinders, between the valve spring seats and their supporting pins, and raise the seats by of the lower arm on the lm tightening the screw; withdraw the pins and do whatever work is required on any of the four valves. After completing all the work the valves may be returned to their respective places and the pins inserted again, the springs remaining undisturbed during the entire operation. The clamp is now relaxed by unscrewing screws (26) and may then be removed.

We claim:

A valve spring seat lifting device for an internal combustion engine comprising a yoke consisting of a verticalbody member and two horizontal arms extending therefrom in substantially parallel relation, the lower arm having a plate secured thereon with a plurality of slots adapted to simultaneously engage a plurality of valve spring seats, and the upper arm having a vertical screw associated therewith :tor clamping the yoke to the engine casing, and being longer than the lower arm so that the screw engages the engine casing rearwardly of the valve CARL FREDERICK LENGFELD. FREDERICK OTTO LENGFELD. J OHN JOSEPH MGHUGH. 

